Remember you had to lead all 2-4 players to exit in Emerald Mine? So, what about adding three more magicians for Mirror Magic for same concept? I mean destroy all kettles and then lead beams of all 2-4 McDuffins magicians to exits.
Here's a couple of fake screenshots:

Maybe, but here's a problem: laser beam changes color to red when it's overheating, no matter what color did you set. I think the beam should have... some kind of flashing effect when heat meter goes too high, like... Pulsating with white, yellow, and red colors or something... I dunno...